export function floatAdd(arg1, arg2) {
  let r1, r2, m;
  try {
    r1 = arg1.toString().split('.')[1].length;
  } catch (e) {
    r1 = 0;
  }
  try {
    r2 = arg2.toString().split('.')[1].length;
  } catch (e) {
    r2 = 0;
  }
  m = Math.pow(10, Math.max(r1, r2));
  return (arg1 * m + arg2 * m) / m;
}

export function floatSub(arg1, arg2) {
  let r1, r2, m, n;
  try {
    r1 = arg1.toString().split('.')[1].length;
  } catch (e) {
    r1 = 0;
  }
  try {
    r2 = arg2.toString().split('.')[1].length;
  } catch (e) {
    r2 = 0;
  }
  m = Math.pow(10, Math.max(r1, r2));
  // 动态控制精度长度
  n = (r1 >= r2) ? r1 : r2;
  return ((arg1 * m - arg2 * m) / m).toFixed(n);
}

export function floatMul(arg1, arg2) {
  let m = 0;
  let s1 = arg1.toString();
  let s2 = arg2.toString();
  if (!s1.includes('.')) s1 = s1 + '.0';
  if (!s2.includes('.')) s2 = s2 + '.0';
    m += s1.split('.')[1].length;
    m += s2.split('.')[1].length;
  return Number(s1.replace('.', '')) * Number(s2.replace('.', '')) / Math.pow(10, m);
}

export function floatDiv(arg1, arg2) {
  let t1 = 0;
  let t2 = 0;
  let r1;
  let r2;
  let s1 = arg1.toString();
  let s2 = arg2.toString();
  if (!s1.includes('.')) s1 = s1 + '.0';
  if (!s2.includes('.')) s2 = s2 + '.0';
    t1 = s1.split('.')[1].length;
    t2 = s2.split('.')[1].length;
  r1 = Number(arg1.toString().replace('.', ''));
  r2 = Number(arg2.toString().replace('.', ''));
  return (r1 / r2) * Math.pow(10, t2 - t1);
}
